<template>
  <div>
    <el-form :model="form" :rules="rules" ref="createGroupForm" label-width="100px">
      <el-form-item label="群ID">
        <el-input v-model="form.groupID"></el-input>
      </el-form-item>
      <el-form-item label="群名称" prop="name">
        <el-input v-model="form.name"></el-input>
      </el-form-item>
      <el-form-item label="群类型">
        <el-select v-model="form.type">
          <el-option label="Private" value="Private"></el-option>
          <el-option label="Public" value="Public"></el-option>
          <el-option label="ChatRoom" value="ChatRoom"></el-option>
          <el-option label="AVChatRoom" value="AVChatRoom"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item label="群头像地址">
        <el-input v-model="form.avatar"></el-input>
      </el-form-item>
      <el-form-item label="群简介">
        <el-input type="textarea" v-model="form.introduction" :maxlength="240"></el-input>
      </el-form-item>
      <el-form-item label="群公告">
        <el-input type="textarea" v-model="form.notification" :maxlength="300"></el-input>
      </el-form-item>
      <el-form-item label="加群方式">
        <el-radio-group v-model="form.joinOption" :disabled="joinOptionDisabled">
          <el-radio label="FreeAccess">自由加群</el-radio>
          <el-radio label="NeedPermission">需要验证</el-radio>
          <el-radio label="DisableApply">禁止加群</el-radio>
        </el-radio-group>
      </el-form-item>
      <el-form-item label="群成员列表">
        <el-select
          v-model="form.memberList"
          default-first-option
          multiple
          filterable
          remote
          :disabled="form.type === 'AVChatRoom'"
          :remote-method="handleSearchUser"
          :loading="loading"
          placeholder="请输入群成员 userID"
        >
          <el-option v-for="item in options" :key="item" :label="item" :value="item"></el-option>
        </el-select>
      </el-form-item>
    </el-form>
    <div slot="footer">
      <el-button type="primary" @click="onSubmit('createGroupForm')">立即创建</el-button>
      <el-button @click="closeCreateGroupModel">取消</el-button>
    </div>
  </div>
</template>

<script>
import {
  Form,
  FormItem,
  Input,
  Select,
  Option,
  Radio,
  RadioGroup
} from 'element-ui'
export default {
  components: {
    ElForm: Form,
    ElFormItem: FormItem,
    ElInput: Input,
    ElSelect: Select,
    ElOption: Option,
    ElRadioGroup: RadioGroup,
    ElRadio: Radio
  },
  data() {
    return {
      form: {
        groupID: '',
        name: '',
        type: 'Private',
        avatar: '',
        introduction: '',
        notification: '',
        joinOption: 'FreeAccess',
        memberList: []
      },
      options: [],
      loading: false,
      rules: {
        name: [{ required: true, message: '请输入群名称', trigger: 'blur' }]
      }
    }
  },
  computed: {
    joinOptionDisabled() {
      return [
        this.TIM.TYPES.GRP_PRIVATE,
        this.TIM.TYPES.GRP_CHATROOM,
        this.TIM.TYPES.GRP_AVCHATROOM
      ].includes(this.form.type)
    }
  },
  methods: {
    onSubmit(ref) {
      this.$refs[ref].validate(valid => {
        if (!valid) {
          return false
        }
        this.createGroup()
      })
    },
    closeCreateGroupModel() {
      this.$store.commit('updateCreateGroupModelVisible', false)
    },
    createGroup() {
      this.tim.createGroup(this.getOptions()).then((imResponse) => {
         this.$store.commit('showMessage', {
            message: `群组：【${imResponse.data.group.name}】创建成功`,
            type: 'success'
          })
        this.closeCreateGroupModel()
      })
      .catch(error => {
          this.$store.commit('showMessage', {
            type: 'error',
            message: error.message
          })
        })
    },
    getOptions() {
      let options = {
        ...this.form,
        memberList: this.form.memberList.map(userID => ({ userID }))
      }
      if (['Private', 'AVChatRoom'].includes(this.form.type)) {
        delete options.joinOption
      }
      return options
    },
    handleSearchUser(userID) {
      if (userID !== '') {
        this.loading = true
        this.tim.getUserProfile({ userIDList: [userID] }).then(({ data }) => {
          this.options = data.map(item => item.userID)
          this.loading = false
        })
        .catch(error => {
          this.$store.commit('showMessage', {
            type: 'error',
            message: error.message
          })
        })
      }
    }
  }
}
</script>

<style lang="stylus" scoped>
</style>
